/* Copyright 2015 Bloomberg Finance L.P.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import * as widgets from '@jupyter-widgets/base';
import { semver_range } from './version';
import * as serialize from './serialize';

export class MarkModel extends widgets.WidgetModel {

    defaults() {
        return {...widgets.WidgetModel.prototype.defaults(),
            _model_name: "MarkModel",
            _model_module: "bqplot",
            _view_module: "bqplot",
            _model_module_version: semver_range,
            _view_module_version: semver_range,

            scales: {},
            scales_metadata: {},
            preserve_domain: {},
            display_legend: false,
            labels: [],
            apply_clip: true,
            visible: true,
            selected_style: {},
            unselected_style: {},
            selected: null,
            enable_hover: true,
            tooltip: null,
            tooltip_style: { opacity: 0.9 },
            interactions: { hover: "tooltip" },
            tooltip_location: "mouse"
        };
    }

    // These two attributes are the pixel values which should be appended
    // to the area of the plot to make sure that the entire mark is visible
    initialize(attributes, options) {
        super.initialize(attributes, options);
        this.on("change:scales", this.update_scales, this);
        this.once("destroy", this.handle_destroy, this);
        // `this.dirty` is set to `true` before starting computations that
        // might lead the state of the model to be temporarily inconsistent.
        // certain functions of views on that model might check the value
        // of `this.dirty` before rendering
        this.dirty = false;
        this.update_scales();
    }

    update_data() {
        // Update_data is typically overloaded in each mark
        // it triggers the "data_updated" event
        this.update_domains();
        this.trigger("data_updated");
    }

    update_domains() {
        // update_domains is typically overloaded in each mark to update
        // the domains related to its scales
    }

    update_scales() {
        this.unregister_all_scales(this.previous("scales"));
        this.trigger("scales_updated");
        this.update_domains();
    }

    unregister_all_scales(scales) {
        // disassociates the mark with the scale
        this.dirty = true;
        for (let key in scales) {
            scales[key].del_domain([], this.model_id + "_" + key);
        }
        this.dirty = false;
        //TODO: Check if the views are being removed
    }

    handle_destroy() {
        this.unregister_all_scales(this.get("scales"));
    }

    get_key_for_dimension(dimension) {
        const scales_metadata = this.get("scales_metadata");
        for (let scale in scales_metadata) {
            if(scales_metadata[scale].dimension === dimension) {
                return scale;
            }
        }
        return null;
    }

    get_key_for_orientation(orientation) {
        const scales_metadata = this.get("scales_metadata");
        for (let scale in scales_metadata) {
            if(scales_metadata[scale].orientation === orientation) {
                return scale;
            }
        }
        return null;
    }

    // TODO make this abstract
    get_data_dict(data, index) {
        return data;
    }

    static serializers = {
        ...widgets.WidgetModel.serializers,
        scales: { deserialize: widgets.unpack_models },
        tooltip: { deserialize: widgets.unpack_models },
        selected: serialize.array_or_json
    };

    dirty: boolean;
    mark_data: any;

}

